Celestial amplitudes: conformal partial waves and soft limits

Nandan, Dhritiman; Schreiber, Anders; Volovich, Anastasia; Zlotnikov, Michael

doi:10.1007/JHEP10(2019)018

Celestial amplitudes: conformal partial waves and soft limits

Journal Article · Thu Oct 03 00:00:00 EDT 2019 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP10(2019)018· OSTI ID:1594825

Nandan, Dhritiman ^[1]; Schreiber, Anders ^[2]; Volovich, Anastasia ^[2]; Zlotnikov, Michael ^[3]

Univ. of Southampton (United Kingdom); Brown University
Brown Univ., Providence, RI (United States)
Columbia Univ., New York, NY (United States)

Massless scattering amplitudes in four-dimensional Minkowski spacetime can be Mellin-transformed to correlation functions on the celestial sphere at null infinity called celestial amplitudes. We study various properties of massless four-point scalar and gluon celestial amplitudes such as conformal partial wave decomposition, crossing relations and optical theorem. As a byproduct, we derive the analog of the single and double soft limits for all gluon celestial amplitudes.

View Accepted Manuscript (DOE)

Research Organization:: Brown Univ., Providence, RI (United States)

Sponsoring Organization:: European Research Council (ERC); USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

Grant/Contract Number:: SC0010010; SC0011941

OSTI ID:: 1594825

Journal Information:: Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 10 Vol. 2019; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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UV considerations on scattering amplitudes in a web of theories Carrasco, John Joseph M.; Rodina, Laurentiu Physical Review D, Vol. 100, Issue 12 https://doi.org/10.1103/physrevd.100.125007	journal	December 2019
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UV considerations on scattering amplitudes in a web of theories Carrasco, John Joseph M.; Rodina, Laurentiu arXiv https://doi.org/10.48550/arxiv.1908.08033	text	January 2019

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